From the Des Moines Register: Play Duffy's caucus candidate quiz

Do you think you're knowledgeable on candidates that have participated in the Iowa caucuses?

See how many past presidential hopefuls you can identify by clicking "begin" below. Then scroll through the names to select your choice.

http://desmoinesregister.com/apps/pbcs.dll/section?category=duffyquiz

Here is one example of Brian Duffy's work!

Or check out Brian Duffy's link on the Des Moines Register site and see him at work:

http://data.dmregister.com/duffy/index.php